IONOMER, RESIN COMPOSITION CONTAINING THE IONOMER, UNSTRETCHED FILM, SHEET OR MOLDED BODY EACH MADE OF THE COMPOSITION, AND LAMINATE COMPRISING LAYER OF THE UNSTRETCHED FILM

摘要

[Problem] It is an object to provide an unstretched film and a sheet that are excellent in an antistatic property and transparency, a resin composition that is used in producing the unstretched film or the sheet and a potassium ionomer that is contained in the composition. [Means for Solving Problem] Disclosed is a potassium ionomer of a polymer or a polymer composition that contains (a) an ethylene unit in the range of 30 to 60% by weight, (b) a propylene unit in the range of 30 to 60% by weight, (c) a butene unit in the range of 2 to 10% by weight, (d) a (meth)acrylic acid ester unit in the range of 0 to 10% by weight, and (e) a (meth)acrylic acid unit in the range of 5 to 15% by weight (with the total of the component units (a) to (e) being 100% by weight). The potassium ionomer has a potassium ion density in the range of 0.5 to 1.5 mmol/g.